Positive shuttle-motion for looms.



Patented Nov 25, I902.

F. s GABLE. POSTIVE SHUTTLE MOTWN FOB LOUIS.

' (Application filed Dec. 1g, 1901.

(No maul-Q) 2 Sheets-Sheet 2.

[S Ilgaz zjima 1 l lfiargzys UNITED STATES PATENT OFFICE.

FRED S. GABLE, OF GLENROCK, PENNSYLVANIA.

POSITIVE SHUTTLE-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 714,294, dated November25, 1902.

1 Application filed December 16, 1901. Serial No. 86,137. (No model.)

To all whom it may concern:

Be it known that I,-FRED S. GABLE, a citizen of the United States,residing at Glenrock, in

thecounty of York and State of Pennsylvania, have invented a new anduseful Positive Shuttle-Motion for Looms, of which the following is aspecification.

My invention relates to certain improvements in loom-shuttle-operatingmechanism of that class employed in wire-weaving looms, andhas for itsprincipal object to improve the construction of the shuttle-holdingcatches for holding and carrying the'shuttles across the shed.

A further object is to dispense with the employment of catches of thatclass in which the tensional strain of the wire is resisted directly bya spring-catch, to the end that all danger of the dropping of theshuttle in the shed may be avoided.

With these and other objects in view the invention consists in the novelconstruction and arrangements of parts hereinafter described,illustrated in the accompanying drawings, and particularly pointed outin the appended claims.

In the drawings, Figure l is an elevation of sufficient of Iawire-weaving loom to illustrate the construction and application of myimof the same.

proved shuttle-operating mechanism. Fig. 2 is a sectional elevation ofoneof the shuttlecarrying bars. Fig. 3 is a sectional plan View Figs. 4and 5 are views similar to Fig. 3, illustrating modifications of thestructure.

Similar numerals of reference are employed to indicate similar partsthroughout the figures of the drawings.

The structureof the loom employed in con- .nection with the presentinvention is immaterial, and the form herein illustrated and describedis merely employed asan instance of one form of loom to which theinvention may be applied.

1 designates a portion of a loom-frame, and 2 a swinginglathe, providedat its upper end with boxes 3'for the reception of a shaft i, on whichthe lathe is pivoted, said shaft being supported in bearings 5 on theloom-frame.

6 designates a shaft carried by bearings on the loom-frame and rotatedby any suitable mechanism. This shaft carries a gear-wheel 7, whichmeshes with a gear-wheel 8 on a shaft 9, also journaled in the frame andcarrying two crank-arms 10, which are connected by rods or arms 11 tobrackets 12, arranged at the outer ends of the hollow shuttle-bars 14.The shuttle-bars slide in boxes 15, connected to or supported by theloom-frame, and are moved back and forth by the rotation of the cranks10.

Pivoted to the brackets 12 at the outer ends of the hollow shuttle-barsare suitable levers 16, adapted to be operated upon in alternation bycam-plates 17, guided upon the loomframe and adjustably connected to areciprocated rod 18, which is operated. by a lever 19, pivoted at 20 tothe frame and adapted to be operated upon by a suitable cam 21, whichreceives its motion from the shaft 6, bevelgears 22 and 23, shaft 4,spur-gears 24 and 25, and shaft 26. I

The construction and operation of the mechanism thus far described arewell known in the art and form no part of my present invention.

The shuttle-bars 14 are rectangular in crosssection and are ofsufficient length to carry the shuttle positively through the shed ateach operation. The shuttle 30 may be of the usual type, carrying abobbin for the wire to be woven and provided at each end with anengaging hook 31, adapted to pass within the open end of theshuttle-bar, the latter being preferably provided with flared endportions 32 and the end of the shuttle being slightly inclined in orderto facilitate its entrance into the shuttle-bar.

On one side of the shuttle-bar are formed two openings 33 and 34:,through which pass the end portions of a catch or hook 35, the bodyportion of the hook being located outside the shuttle-bar and having aflattened face adapted to fit snugly against the fiat outer face of thebar. The hooked end, or that end adapted to engage with the catch orhook of the shuttle, is provided with a rounded outer end 36, adapted tobe engaged by the inclined end of the shuttle on its inward movement,and is also provided with a slightlyinclined shoulder 37 for engagementwith a correspondingly-shaped shoulder or face on the shuttle. The shankportion of the catch extends through the openings 34and is mounted on apivot-pin 38, the ends of which extend through the wall of theshuttle-bar. On the shank portion of the catch are front and rear endfaces 40 and 41, respectively, which are engaged by a suitably-shapedcam-block 42, adapted to fit within the shuttle bar and provided with arecess, into which the shank of the catch extends. The recess is soshaped as to form front and rear cam-faces 43 44 for engagement with thecam-faces 40 and 41, respectively, of the cam-catch 35. The camblock isconnected by a rod 45 to the lever 16, the end of the rod being threadedfor the reception of two adj ust-able nuts 46 47, (shown by dotted linesin Fig. 2,) said nuts holding a collar 48, from which projects a pin 49into a vertical slot 50, formed in the lever. At a point within theshuttle-bar the rod 45 is provided with a fixed collar 51, between whichand the end of the shuttle-bar is a coiled compression-spring 52,normally tending to force the cam-block in the direction of the catchand forcing the cam-face 44 of said block into engagement with thecam-face 41 of the catch, thus tending to keep the hooked end of thecatch in position within the lines of the shuttle-bar.

In the operation of the mechanism the shuttle-bars receive movement inopposite direction through the leading of the cranks 10 andconnecting-rods 1l,the operating-lever 16 being brought into contactwith their respective cams 17 at such times as to withdraw one or otherof the cam-blocks 42, causing its camface 43 to come into contact withthe camface 40 of the catch, and thus raise the hooked end of the latterfrom engagement with the hooked end of the shuttle. At the same time theopposite end of the shuttle is forced into the opposite open end of themating shuttlebar, coming into contact with the inclined face 36 of thecatch and automatically raising the same until it has passed beyond theslightly-inclined face 37 of the hooked end of the catch, the latterbeing then depressed by the action of the spring 52 as the cam-face 44is forced against the cam-face 41 of the catch.

The face 37 of the catch and the similar face of the shuttle-hook withwhich it engages may be perfectly straight or at a right angle to thelength of the shuttle-bar, but for convenience are slightly inclined, sothat there will be no backward pull on the shuttle as the catch swingson its fulcrum-point to the disengaging position. The inclination ofthese faces, however, is such that there can be no possibility of theirdisengagement under the tensional strain exerted by the weftwires, thecam-faces 44 and 41 being forced intointimate contact nnderstress of thespring 52 and preventing movement of the hooked end of the catch in anoutward direction. By this means I am enabled to insure the firm holdingof the shuttle during its travel across the shed, preventing thedisengagement of the shuttle from the carrying-catch by reason of thetension of the wire, and at the same time the construction is such as tohave all of the working parts inclosed within the body of theshuttle-bar, avoiding any projections which might engage with the warps.

The structure may be slightly modified in the manner shown in Fig. 4,the hook 35 in this instance being fulcrumed on a pin 38 within the bodyof the shuttle-bar and from thence extending rearwardly to form a lever53 for engagement with the operating-bar 45', the latter being providedwith a compressionspring and cam-operated lever in the manner previouslydescribed.

In Fig. 5 I have illustrated a further modi- I fication in which thehook or catch 35 is pivoted at 38 and is connected bya link 60 to ablock 61, guided within the shuttle-bar and connected by a rod 45 to anoperating-lever and spring of the character above set forth.

In both ofthe modified constructions it will be noted that the mechanismis also contained within the limits of the shuttle-bar and that theconstruction is such that there can be no disengagement of the shuttlecatch under tensional strain of the wire.

The structure may be modified in a variety of ways as regards form,proportions, and minor details of construction without departing fromthe intent or spirit of my invention, and it may be applied to positiveshuttle-motion looms of any desired character or construction.

Having thus described my invention, what I claim is 1. In a device ofthe class specified, the combination with a hollow shuttle-bar, of acatch or hook having its shank end extending through an opening into thebody of the bar and pivoted therein and its engaging or bill endextending through a second opening in the bar,-an operating-leverarranged at the outer end of the bar, and means for moving said lever topositively operate the catch or hook in both opening and closingmovements, substantially as specified.

2. In a device of the class specified, the combination with a hollowshuttle-bar, of a camblock guided therein and having a recess, a shuttlecatch or hook having its shank end extending into said recess andpivoted to the shuttle-bar, said catch having cam-faces for engagementwith cam-faces on the block, an operating-lever arranged at the outerend of the shuttle-bar, a rod connecting the lever and block, and acompression-spring arranged on said rod and normally tending to holdthecatch in closed position,substantially as speci= fied.

3. In a device of the class specified,the combination with a hollowshuttle-bar having outwardly-flared walls at its inner end, acamblockguided within the shuttle-bar and having a recess, a shuttle-engaginghook or catch having its engaging and shank ends extending throughopenings in one wall of the bar, the shank end having cam-faces adaptedfor engagement with similar cam-faces on the rounding said rod andextending between the 10 cam-block, a pivot-pint1e for securing saidcollar and the end of the shuttle-bar.

shank end to the body of the bar, an operat- In testimony that I claimthe foregoing as ing-lever arranged at one end of the bar, an my ownIhave hereto affixed my signature in 5 operating-rod extending from thelever to the the presence of two Witnesses.

cam-block, means for adjusting the relative FRED S. GABLE. positions ofthelever and rod, a fixed collar Witnesses:

carried by the rod at a point within the shut- GEO. R. GAWTHROP,

tie-bar, and a coiled compression-spring sur- AUG. W. BRADFORD.

